Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 11 - Section 11.1 - The Sine Ratio and Applications - Exercises: 33



Work Step by Step

Let $\alpha$ be the angle formed by the ladder and the wall. $\sin\alpha=\frac{4}{10}$ $\alpha=\sin^{-1}\frac{4}{10}$ $\alpha\approx24^{\circ}$
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